Dutch Apple Popover

Tonight we had breakfast for dinner and this one got good reviews from the whole family.
(Thanks again to Stephanie Jaworski of Joyofbaking.com)

Apples:
2 large Granny Smith Apples, peeled, cored, and cut into 1/4 inch slices
2 tablespoons unsalted butter
3 tablespoons granulated white sugar
1/4 teaspoon ground cinnamon
Batter:
3 large eggs
1/2 cup milk
2 tablespoons unsalted butter, melted
1 teaspoon pure vanilla extract
1/2 cup all-purpose flour
1/4 teaspoon salt
2 tablespoons granulated white sugar
Garnish:
Confectioners sugar
Softly whipped cream

1. Preheat the oven to 425 degrees F and place the rack in the center of the oven.
2. For Apples: In a large 9- or 10- inch heavy nonstick ovenproof skillet melt the butter. Add the sliced apples, sugar, and cinnamon and sautéed the apples until tender.
3. For the Popover Batter: In your food processor or blender place all the batter ingredients. Process for about 45 - 60 seconds, scraping down the sides of the bowl as needed. Once the batter is completely smooth, pour over the apples.
4. Bake for about 20 minutes or until the popover is puffed and golden brown Do not open the oven door until the end of the baking time or it may collapse. Serve immediately with a dusting of powdered sugar and softly whipped cream.